* Copyright 2010, Haiku Inc. All rights reserved.
* Copyright 2001-2010, Axel Dörfler, axeld@pinc-software.de.
* This file may be used under the terms of the MIT License.
*
* Authors:
* Janito V. Ferreira Filho
*/
#ifndef TRANSACTION_H
#define TRANSACTION_H
#include <util/DoublyLinkedList.h>
class Journal;
class Volume;
class TransactionListener
: public DoublyLinkedListLinkImpl<TransactionListener> {
public:
TransactionListener();
virtual ~TransactionListener();
virtual void TransactionDone(bool success) = 0;
virtual void RemovedFromTransaction() = 0;
};
typedef DoublyLinkedList<TransactionListener> TransactionListeners;
class Transaction {
public:
Transaction();
Transaction(Journal* journal);
~Transaction();
status_t Start(Journal* journal);
status_t Done(bool success = true);
bool IsStarted() const;
bool HasParent() const;
status_t WriteBlocks(off_t blockNumber,
const uint8* buffer,
size_t numBlocks = 1);
void Split();
Volume* GetVolume() const;
int32 ID() const;
void AddListener(TransactionListener* listener);
void RemoveListener(
TransactionListener* listener);
void NotifyListeners(bool success);
void MoveListenersTo(Transaction* transaction);
void SetParent(Transaction* transaction);
Transaction* Parent() const;
private:
Transaction(const Transaction& other);
Transaction& operator=(const Transaction& other);
Journal* fJournal;
TransactionListeners fListeners;
Transaction* fParent;
};
#endif
